航道頻道 的英文怎麼說
中文拼音 [hángdàobīndào]
航道頻道
英文
channel-
This is a computerised voice communication system between pilots and air traffic controllers, and between air traffic control positions in the air traffic control centre, aerodrome control tower, rescue coordination centre and aeromobile centre by using pre - set switching and distribution of various aeronautical frequencies and direct communication lines. the new computerised system will enhance the overall efficiency in communications
讓機師與管制員之間，或航空交通管制中心、指揮塔、援救協調中心和航空通訊中心內各不同管制崗位之間，能用預先設定的系統作直接通話，包括可轉換和發布的航空通訊頻道和直接通訊線路等。The conventional sphere model of earth and circle model of orbit are discarded, and the ellipsoid model and the ellipse model are selected for further research, which achieves a method to determine the target position through the antenna pointing direction. and the spaceborne sar system design and simulation software is brought forth. this software accomplishes sar system coefficients design for antenna area, pulse repetition frequency, signal bandwidth, downlink data rate, radar transmitter power and satellite platform yaw steering
本文從星載雷達的星地幾何關系入手，舍棄傳統星載合成孔徑雷達研究中的球地球模型和圓軌道模型，研究了在地球橢球模型和橢圓軌道模型下由雷達天線確定目標坐標的方法，並在此基礎上研製了星載合成孔徑雷達系統設計與模擬軟體，完成雷達系統天線尺寸、脈沖重復頻率、信號帶寬、雷達信號數據率、雷達發射功率、衛星平臺的偏航牽引等幾個方面的系統參數設計以及雷達多普勒特性、雷達系統模糊、雷達定位及精度的分析，最後完成雷達回波信號的模擬。Thirdly, by neglecting the coupling influence, the control laws of pitching, yawing and sloping movements are designed separately with frequency domain analysis and root locus, and then the parameters of the controller are chosen
第三，忽略耦合影響，將控制系統分為俯仰、偏航、傾斜三個相互獨立的通道，用頻域分析法和根軌跡法設計控制律、選取控制器參數。Have been put into use and upgraded for many years, perfect quality and tehnology obtained day by day. introduced hot pressing high frequency adhesive equipment and high density sewing machines are used to make the body of airboat, the parts of the body is sewed together in high density before they are adhesived by hot high frequency, three strings used as safety belt are added to the body, the clothe for the body has been strictly examined to ensure no gas escaping
遙控航空廣告飛艇艇身採用先進的進口導軌輥壓高頻熱合機及高密腳工業縫紉機承製。艇體在艇瓣熱合之前先用結實的線將合線緊密縫合，然後用高頻熱合機熱合，並在艇體上加制了三道束身安全腰帶，艇體布料經過嚴格的光透檢漏法嚴查，確保不漏氣。These include the well - known am, fm, shortwave and citizens bands and vhf and uhf television channels, as well as hundreds of less familiar bands that serve cellular and cordless telephones, gps trackers, air traffic control radars, security alarms, radio - controlled toys and the like [ see box on page 71 ]
這些頻率包括眾所周知的am 、 fm 、短波、民用頻帶， vhf和uhf電視頻道，以及數百個較不為人知的頻帶，供行動電話、家用無線電話、 gps追蹤系統、航空管制雷達、安全警示與無線電遙控玩具等使用（見85頁無線電頻譜） 。Then in allusion to biased momentum wheel system, based on classical control system a pid controller was design about pitching channel. according to specialty of roll - yawing channel, this paper discuss long - time cycle movement and short - time cycle movement. when design the control method of long - time cycle movement, whiff thruster is used to assistant the control system. when design the control method of short - time cycle movemen, in order to sovle the problem of coundn ’ t abtain the angular velocity signal, nonminimum phase controller advanced by terasaki is used
然後針對偏置動量飛輪系統，基於經典控制理論設計俯仰通道的pid控制律，根據滾動?偏航通道耦合的特點，分別討論了由軌道角頻率和章動頻率引起的長周期運動和短周期運動。其中長周期運動控制律設計時，結合了噴氣推力控制來輔助偏置動量控制;短周期運動控制中，為了解決不能獲得角速度信號的問題，採用terasaki提出的非最小相位控制器進行控制。The vessel accidents happen occasionally with traffic density increasing greatly due to a mount of vessels navigating in port, as well as the development of ship ' s amount and types and tonnage becoming larger and larger with the development of the shipment
隨著海運業的發展，海上航行船舶數量、類型和噸位都發生了巨大的變化，大量的船舶頻繁活動于港口和海上交通要道，使港口等水域通航密度大為增加，重大海上交通事故時有發生。If your flight schedule s schedule preferences is 3 all schedules, then you can set 700k as the channel size
如您下載航班時間表時間揀選第3項選擇即是所有直航班次的資料，請調高頻道容量至700k 。High frequencyvery high frequencyultra high frequency ( hfvhfuhf ) communication equipment this includes the radio transmitters and receivers operating on various frequencies used for both long - range and short - range airground communications with aircraft
這類儀器包括無線電發射器和接收器，可在不同頻道與航機作長程和短程的地對空通訊。On long - haul aircraft, 50 movies are offered each month on the avod audio video on demand system in first and business class. in economy class, 32 movies are available through the broadcast channels
于長途航機上， 「自選影院」為頭等及商務客艙的乘客提供多達五十齣電影而經濟客艙的乘客則可欣賞三十二出以頻道形式播放的猛片。Spread spectrum technique, which can handle variable adverse environments, exhibits unique qualities that have a number of advantages in anti - jamming, anti - noise, reduction of multi - path interference, low power spectral density, privacy, selective addressing and code division multiplexing
擴頻通信技術具有優越的抗干擾、抗噪音、抗多徑衰落性能，能在低功率譜密度下工作，具保密性、可多址復用和任意選址，能有效克服各種惡劣的通道特性，目前廣泛應用於移動通信、雷達、導航、測距、電力線通信等領域。On regional aircraft, 28 movies are offered on the broadcast channels in all classes
在短途航機上，我們的播放頻道亦為所有乘客送上二十八出精選電影。In all classes of regional aircraft and in economy class of long - haul aircraft, a total of up to 52 hours of short features is offered through the broadcast channels
而在短途航機上以及長途航機的經濟客艙內，我們亦備有共達五十二小時以頻道形式播放的電視節目及短片，在旅程中為您帶來無窮的娛樂。Moreover, you can sample songs in a variety of languages from different cultures : english, cantonese, mandarin, japanese, korean, thai, hindi, tagalog and bahasa malaysian ! there is bound to be some that you would like
您可於我們所有航班上選取多達22個頻道的節目，為您提供英語粵語國語日語韓語泰語印度語菲律賓語及馬來西亞語的精選廣播。Down link channel of new generation space tt & c system generally select qpsk as its modulation mode. firstly, carrier synchronization of qpsk is studied in the thesis, and then the key question - carrier synchronization in low snr and severe doppler frequency shift is systemic analyzed. in addition, different existing project are analyzed and compared
新一代航天測控系統的下行通道一般選擇qpsk作為其信號調制方式，本文首先研究了qpsk的載波同步問題，對其中的關鍵問題? ?低信噪比及大多普勒頻移情況下的載波同步進行了系統的分析，對現有的不同方案進行了分析與比較。分享友人